The Cali has the same cams as every other 929.
The 954 has 0.25-0.35mm more lift which isn't huge and with grind tolerances could even be a marginal difference over your current cams. It'd be worth measuring your cam lobes while you're in there. The 954 profiles _may_ be more aggressive but I've never compared the two to be able to say.
You'd do better to get some aftermarket cams if you're going to go to the effort.